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Northwest Africa 11195
Basic information Name: Northwest Africa 11195
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11195
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1307 g
Meteoritical Bulletin:  MB 106  (2018)  Iron, IAB-MG
Recommended:  Iron, IAB-MG    [explanation]

This is 1 of 120 approved meteorites classified as Iron, IAB-MG.   [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites
Comments: Approved 1 Apr 2017
Writeup from MB 106:

Northwest Africa 11195 (NWA 11195)

(Northwest Africa)

Purchased: 2015

Classification: Iron meteorite (IAB-MG)

Petrography: Bandwidth is ~1.8 mm, corresponding to a coarse octahedrite. Very little taenite, present at some, not all, kamacite-kamacite boundaries and in uncommon plessite fields; no troilite is visible. There are a few small (~3 × ~1 mm) hieroglyphic schreibersites and many tiny rhabdites. Sample has a thin (0.3-0.5 mm) weathering rind. It seems to show a reheated zone with splotchy dark areas extending in ~2 mm from weathering rind. This zone may reflect reheating after the fall.

Geochemistry: Composition: Co, 4.52 mg/g; Ni, 70.1 mg/g; Ga, 89.9 μg/g; Ge, 435.0; As, 11.6 μg/g; W, 1.26 μg/g; Ir 2.62 μg/g; Au, 1.474 μg/g. The meteorite is compositionally a member of IAB-MG. Its composition is relatively close to that of the NWA 854 shower. The Ir in this meteorite is 2.62 μg/g, that in NWA 854 is 2.10 (based on three different specimens). Such a large range is seen in Canyon Diablo and Campo del Cielo, but it may be an independent fall.

Classification: The meteorite is a IAB-MG based on composition and structure.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2015
Mass (g):1307
Class:Iron, IAB-MG
Classifier:J.T. Wasson, UCLA
Type spec mass (g):30.6
Type spec location:UCLA
Main mass:DPitt
Comments: ; submitted by Wasson
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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